Product cooling
A cooling system for beverage dispense has a circuit 5 in which binary ice is circulated. A modular heat exchange unit 13 for a plurality of beverage lines 25,27,29,31,33 is connected to the circuit 5 for cooling beverage prior to dispense from a dispense tap 35 in a serving area such as a bar. The ice fraction in the binary ice provides a thermal store that can absorb heat without increasing the temperature of the binary ice and enables the system to respond quickly to changes in the cooling requirements in the circuit 5.
1. A method of cooling beverages, comprising the steps of:
generating binary ice; and
heat transfer coupling the binary ice to the beverage to cool the beverage,
wherein said generating step comprises generating binary ice at a first location, and including the step of flowing binary ice from the first location to a second location, said heat transfer coupling step comprising heat transfer coupling binary ice at the second location to beverage to be cooled,
wherein said flowing step comprises flowing the binary ice through a closed loop coolant recirculation circuit extending between the first and second locations.
2. A method according to claim 1 , including the step of dispensing the beverage with a beverage dispense system, said flowing step comprising flowing the binary ice from the first location to the second location through the closed loop coolant recirculation circuit, and said heat transfer coupling step comprising heat transfer coupling the coolant recirculation circuit to beverage at the second location.
3. A method according to claim 2 , including the further steps of flowing binary ice through the coolant recirculation circuit to a third location; and heat transfer coupling the coolant circuit at the third location to equipment for food.
4. A method according to claim 3 , wherein the equipment for food is one or more of a refrigerated cabinet, a cold room, a cold shelve, a chilled sink, a frozen or condensing dispense font, a chilled or frozen display, a bottle cooler, a wine cooler, an ice maker and an air conditioning unit.
5. A method according to claim 2 , wherein said heat transfer coupling step is performed by flowing each of the binary ice and the beverage through a heat exchanger to cool the beverage within the heat exchanger by heat exchange with the binary ice.
6. A method according to claim 2 , including the further step of controllably heat transfer coupling the binary ice coolant recirculation circuit to a second coolant circuit to control the temperature of coolant in the second coolant circuit.
7. A method according to claim 6 , wherein said step of controllable heat transfer coupling is performed by controllably adding binary ice from the binary ice coolant recirculation circuit to the coolant in the second coolant circuit to control the temperature of the coolant in the second coolant circuit.
8. A method according to claim 6 , wherein said step of controllable heat transfer coupling is performed by controllably heat exchange coupling binary ice in the binary ice coolant recirculation circuit to the coolant in the second coolant circuit.
9. A method according to claim 2 , wherein said flowing step comprises flowing binary ice through the coolant circuit at a flow velocity equal to or greater than a selected minimum flow velocity to prevent separation of ice from liquid.
10. A method according to claim 9 , wherein the binary ice comprises a water/glycol mixture.
11. A beverage dispense system, comprising:
a beverage dispenser having a beverage dispense head;
means for flowing beverage from a beverage supply to said dispense head for dispensing of the beverage by said dispense head;
means for generating binary ice; and
means for heat transfer coupling generated binary ice to beverage to be dispensed by said dispense head to cool the beverage,
wherein said means for generating binary ice generates binary ice at a first location, and including means for flowing binary ice from said first location to a second location, said means for heat transfer coupling comprising means at said second location for heat transfer coupling binary ice to beverage to be dispensed by said dispense head,
wherein said means for flowing binary ice includes means for flowing binary ice through a coolant circuit extending from said first to said second location, and said means for heat transfer coupling comprises a heat exchanger through which binary ice and beverage from the beverage supply are flowed to cool the beverage by heat exchange with the binary ice in the coolant circuit,
wherein said coolant circuit is a closed-loop binary ice coolant recirculation circuit.
12. A beverage dispense system according to claim 11 , including a second closed-loop coolant recirculation circuit, and means for heat transfer coupling said binary ice coolant recirculation circuit to said second coolant recirculation circuit to control the temperature of coolant in said second circuit.
13. A beverage dispense system according to claim 12 , wherein said means for heat transfer coupling said binary ice coolant recirculation circuit to said second coolant recirculation circuit includes means for adding binary ice from the binary ice coolant recirculation circuit to coolant in the second coolant recirculation circuit.
14. A beverage dispense system according to claim 11 , wherein said means for heat transfer coupling at said second location includes means for heat transfer coupling binary ice to said dispense head.
15. A beverage dispense system according to claim 11 , wherein said beverage dispenser has a plurality of dispense heads, and including a plurality of heat exchangers each for an associated one of said dispense heads for cooling beverage flowed to the associated dispense head.
16. A beverage dispense system according to claim 15 , wherein each said heat exchanger is located close to its associated dispense head.
17. A beverage dispense system according to claim 15 , wherein said plurality of heat exchangers are combined in a single heat exchange unit.